use appropriate netty dependency
use appropriate jms spec dependency version
use the `rest` example module as the parent

* this works nicer with maven’s assumption that the relative path is `../`
* this also allows us to remove the specification of the groupId, as it is inherited
fix references to getLocationLink()

(renamed in Resteasy 3 from getLocation() to getLocationLink() )
release connections after each request

(see commit 6104bf8 )